Cross-arm attachment for poles



June 11, 1929. J, B, LE PER 1,716,702

CROSS ARM ATTACHMENT FOR POLES Filed Jan. 13, 1928 Imenfor:

Patented June 11, 1929.

UNITED STATES JOHN B. LEEPER, F GLENFIELD, PENNSYLVANIA.

CROSS-ARM ATTACHMENT FOR. POLES Application filed January 18, 1928. Serial No. 246,459.

This invention relates to attaching means for cross-arms such. as used to support cables and wires on poles and similar supports, and has for its object the provision or a novel attaching means which will prevent the canting of the crossarms without the use of diagonal braces.

Heretofore it has generally been the pracquire any holes in the pole, provides ready adjustment vertically relative to the pole by simply loosening four nuts, and is cheaper both to manufacture and use than the attaching means heretofore used.

In the drawings- Figure 1 is an elevation of a pole having cross-arms attached according to this invention.

Figure 2 is a transverse section through the pole immediately above one of the crossarms.

Figure 3 is an elevation showing details in the construction illustrated in Figures 1 and 2.

Figure 4 is an elevation on a larger scale, showing constructional details of arm attaching means embodying my invention.

Figure 5 is an elevation, similar to that of Figure 4, showing a modification of my invention.

Figure 6 is an elevation, similar to that of Figure 4, showing a further modification of the invention.

Referring more particularly to the drawings, the numeral 2 designates the pole which is shown as a standard wood pole such as is in common use for supporting cables, wires and other electric transmission lines. It will be understood that this invention is not limited to the use of wood poles but may also be used to attach the cross-arms to metal and concrete poles if desired.

The pole 2 is provided with two crossarms designatedgenerally by the numerals 3 and 4. The cross-arms 3 and 4 are shown as composed of standard rolled metal angle sections, although it will be understood that they may be composed of other metal shapes or of wood, if desired.

The cross-arms 3 and 4 are each provided with an angle bracket or plate 5 which has one flange riveted or bolted to the upper flange of the cross-arms, as at 6, and its other flange extending vertically parallel with the back flange or" the cross-arm.

In Figures 5 and 6 I have shown a standard rolled angle and wooden cross-arms 7 and 8, respectively, which are provided with attaching plates 9 which extend vertically beyond the cross-arms.

'l he'brackets or plates 5 and 9 all serve to provide a wide or extended bearing against the post and also to provide vertically spaced points to receive the U-bolts 10 and 12.

The U-bolts 10 and 12 extend around the I pole at vertically spaced points and have their ends projected through apertures in the cross-arm and bracket or plate of F igures 1 to 4 and in the plate of Figures 5 and 6 and have nuts 14 threaded thereon to hold cross-arm in position.

The U-bolts 10 and 12 are preferably round in cross-section so as to permit them to bite into the pole when the nuts 14 are threaded home, and therefore firmly hold the cross-arms in position.

It will be understood that when the crossarms are composed of metal the brackets or plates may be welded to the cross-arms if desired.

When the brackets or plates are provided on the cross-arms to increase the bearing surface in contact with the pole and the U- bolts 10 and 12 are drawn up tight the crossarms will be held firmly in place on the pole and canting of the cross-arms will be prevented without the use of the usual diagonal braces.

Another feature of the novel attaching means of this invention is the ease with which the cross-arms may be adjusted vertically. hen it is desired to adjust a crossarm vertically all that is necessary is to loosen the nuts 14 on the U-bolts and then raise or lower the cross-arm to the desired position and again tighten the nuts 14.

In the cross-arm attachments heretofore generally used it was necessary to bore new holes for the attaching bolts in the crossarm and diagonal braces and to entirely remove the cross-ar1n and braces and remount the same in order to change the vertical position of the cross-arm.

\Vhile I have shown and described certain specific embodiments of my invention itWill be understood that I do not Wish to be limited thereto since various modifications may be made without departing from the scope of my invention as defined in the ap pended claims.

I claim 1. Means for attaching cross-arms of angular cross-section to poles, comprising a bracket or plate fastened to one of the horizontal faces of the cross-arm and extending vertically to one side of the same and separate fastening devices engaging said plate and the cross-arm at points spaced vertically from each other, so as to hold the cross-arm against canting.

2. Means for attaching cross-arms of angular cross-section to poles, comprising a bracket or plate fastened to one of the horizontal faces: of the cross-arm and extending vertically to one side of the same and separate Ubolts embracing the pole at vertically spaced points, one of said U-bolts being secured to said plate and the other being secured to said cross-arm, said Ubolts permitting attachment at any desired height, on the pole, and serving to prevent canting of the cross-arm.

3. Means for attaching cross-arms ofangular cross-section to poles, comprising a bracket or plate fastened to one of the l1orizontal faces of the cross-arm and extending vertically to one side of the same and separate U-bolts embracing the pole at vertically spaced points said Ubolts having a round cross-section so as to enable them to bite into the pole, one of said U-bolts being secured to said plate and the other being secured to said cross-arm, said Ubolts permitting attachment at any desired height, on the pole, and serving to prevent canting of the cross-arm Without the use of diagonal braces.

4. Means for attaching cross-arms of angular cross-section to poles, comprising a bracket or plate rigidly secured to one of the horizontal faces of said cross-arm and extending vertically to one side of the same, said plate having its rear face flush with the rear or pole engaging face of said cross-arm, and separate Ubolts embracing the pole at vertically spaced points, said Ubolts having a round cross-section so as to enable them to bite into the pole, one of said Ubolts being secured to said plate and the other being secured to said cross-arm, said Ubolts permitting attachment at any desired height, on the pole, and serving to prevent canting of the cross-arm Without the use of diagonal braces.

5. Means for attaching angle iron crossarms to poles, said arms being positioned with one flange extending parallel with the side face of the pole and its other flange extending horizontally to form the top of the arm, an angle iron bracket having one flange extending parallel with and rigidly secured to said top flange of said arm and having its other flange extending upwardly parallel with the side face of the pole, and separate Ubolts embracing the pole at vertically spaced points, said Ubolts having a round cross-section so as to enable them to bite into the pole, one of said Ubolts being secured to said bracket and the other being secured to said crossar1n, said Ubolts ermitting attachment at any desired heig t on the pole and serving to prevent canting of the cross-arm without the use of diagonal braces.

In testimony whereof, I have hereunto set my hand.

JOHN B. LEEPER. 

